Nigeria has been a country with bad leadership from the onset, this is not surprising. When the largest Ponzi scheme that was carried out in South Africa turned out to be Ponzi, the South African government still looking for ways to regulate crypto, but Nigeria go for ban without any prior notice. I think Nigeria government still have internal agenda they do not disclose. The credit card monthly spending was reduced from over $2000 monthly to $100 monthly, this was because they are not producing enough goods for export and import more, therefore inconvenienting Nigeria citizens, especially the average people that depends on such because the rich ones will see a way through. Now, that might be one of the reason they ban crypto this time around but telling that it brings about criminality. Nigeria will also be Nigeria, the leaders will never think in the right direction, especially during this worst time ever Nigerians are especially since 2018.